Stihl 021

Online version - not for reprint
Sprocketcoverwithintegrally
moldedchaincatcher(1).
Ifthechaincatcherhasbroken
off(2),repairasfollows:
•
Prytheplugoutofthefrontright-
handAVelement.
•
Oilthecylindricalpart(1)ofthe
replacementchaincatcher.
•
Pushthechaincatcherintothe
AVelement(2)andengagethe
peg(3)inthehousingbore(4)at
thesametime.
Troubleshootingchart-see
"StandardRepairs,Trouble-
shooting"handbook.
-Removetheclutchdrum/chain
sprocket-see4.1.
-Removetheairfilter-see10.1.
-On023L,removethefilterbase-
see10.2.2.
•
Takeouttheshutter.
-Pullbootoffthesparkplugand
thenunscrewthesparkplug.
-Closethedecompressionvalve,
iffitted.
•
Pushthelockingstrip(1)
00008935903intothecylinder.
•
Unscrewclutchfromthe
crankshaftclockwise(left-hand
thread).
-Servicetheclutch-see
"StandardRepairs,
Trouble-shooting"handbook.
•
Screwontheclutchandtighten
downto50 Nm(37 lbf.ft).
-Installtheclutchdrum/chain
sprocket-see4.1.
4.2 ChainCatcher 4.3 Clutch
VA
135RA023
VA
135RA022
1
VA
135RA024
021,023,025 7